51. Which of the following antibodies is most useful in staining a majority of the cells in a germinal center shortly after primary antigen stimulation?A) Anti-CD3B) Anti-complement receptor 3C) Anti-IgGD) Anti-IgME) Anti-macrophage-1

Introduction:- A germinal center is a specialized microenvironment within secondary lymphoid organs…

Answered: 51. Which of the following antibodies…

Phlebotomy Essentials

6th Edition

ISBN:9781451194524

Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Chapter1: Phlebotomy: Past And Present And The Healthcare Setting

Section: Chapter Questions

Problem 1SRQ

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A 3-year-old child has a history of serious infections and is currently hospitalized with meningitis. The doctor suspects that he may have a complement deficiency and orders testing. A buffer that chelates calcium was added to specimen. There was a decrease radial haemolysis on agarose plate a) Which complement pathway accounted for the result obtained and how will the result be reported in terms of hemolysis at 50 %? b) What is hydrodynamic focusing and why is it an important feature of an instrument.
Two newly developed vaccine candidates (A and B) are tested in mice for their ability to elicit high concentrations of anti-meningococcal antibodies that would provide mucosal as well as bloodstream protection. Also, the ideal candidate vaccine should also provide long-lasting immunity to the infection. The figure below shows the responses to a primary, followed by a secondary immunization to each of the two candidate vaccines. a) Which candidate vaccine elicits the preferred response? What are the three aspects of the preferred response that make it the candidate vaccine of choice? b) What is the likely composition of each vaccine and what evidence from the information above are used to lead to your conclusions? c) To confirm the choice of the preferred candidate vaccine, what type of additional information from the vaccine trials in mice shown above would support this conclusion? Name two additional features of the secondary antibody response to each candidate vaccine that could be…
Practice q1 What kind of cell carries an IgM antibody? a)Mast cell b) B cells c)Helper T cell d) Killer T cell Practice q2 What is displayed on the outside of a killer T cell? a)CD8 antibody b)CD8 receptor c)CD4 receptor d)CD4 antibody
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(Please answer all parts, thank you!) 1) Mature red blood cells contain hemoglobin for transporting oxygen but contain little else. They lack a nucleus and most organelles. Are red blood cells more or less likely to be infected by a virus? a) More likely b) Less likely 2) How does SARS-COV-2 genetic material get replicated? a) Host cell DNA polymerase b) Host cell RNA polymerase c) RNA polymerase encoded for by viral genome and built in the host cell d) RNA polymerase encoded for by viral genome and originated from the virus 3) How does SARS-COV-2 proteins get built? a) The host cell's ribosome b) Ribosome encoded for by viral genome and built in host cell
(37) A 22 year old man develops diarrhea, enlarged lymph nodes, splenomegaly, hepatomegaly, and rash 45 days after a bone marrow transplantation. Which of the following is the moist likely cause of his condition (A) Acute rejection. (B) Chronic Rejection. (C) Graft-versus-host-disease. (D) Hyperacute Rejection. (E) Second set Reaction
All of the following are true concerning the Alere HIV test except: a)this test can detect infection 10 days post exposure b)the presence of three lines on the test indicates a positive reaction for anitgen and antibody against HIV c)unlike Oraquick the test is run with blood sample only and not oral fluid d)the presence of a single line indicates that a person has antibodies but no antigen for HIV e)this is a test that is considered both a direct and indirect test for HIV diagnosis
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When an antigen complex is bound to a Class I MHC molecule, it can stimulate a A) B cell. B) plasma cell. C) helper T cell. D) cytotoxic T cell. E) Antigen presenting cell.
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51. Which of the following antibodies is most useful in staining a majority of the cells in a germinal center shortly after primary antigen stimulation? A) Anti-CD3 B) Anti-complement receptor 3 C) Anti-IgG D) Anti-IgM E) Anti-macrophage-1